Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos têm as cores azul e dourado?
 ###Tabelas: CREATE TABLE availability_and_names (availability_and_names_id AUTO_INCREMENT PRIMARY KEY, Country VARCHAR, Type of Protection VARCHAR, Maximum Term VARCHAR, PCT route available VARCHAR, Conversion from Patent Application VARCHAR) CREATE TABLE shooting_stars_competition (shooting_stars_competition_id AUTO_INCREMENT PRIMARY KEY, Pos. VARCHAR, Player VARCHAR, Team VARCHAR, Height VARCHAR, Weight INT) CREATE TABLE nations_cup (nations_cup_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Winner VARCHAR, Runner-up VARCHAR, Third VARCHAR, Winner Men VARCHAR, Winner Women VARCHAR) CREATE TABLE current_members (current_members_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Location VARCHAR, Founded INT, Type VARCHAR, Enrollment INT, Nickname VARCHAR, Joined VARCHAR, Primary Conference VARCHAR, Colors VARCHAR) CREATE TABLE impact (impact_id AUTO_INCREMENT PRIMARY KEY, Member countries VARCHAR, Population INT, Area (km²) INT, GDP (billion US$) VARCHAR, GDP per capita (US$) INT, Languages VARCHAR)  
SELECT COUNT Institution FROM current_members WHERE Colors = Blue & Gold